What happens if you do not use Misoprostol in time?

The doctor advises you to use the Misoprostol 24 hours after swallowing the Mifepristone tablet. However it can also be used earlier or later, from 12 hours to 72 hours after swallowing Mifepristone.

More scientific information:

Research has shown that for women with pregnancies of 8 weeks or less, Misoprostol works with the same efficacy whether it is taken at 12 hours, 24 hours, 48 hours, or as much as 72 hours after Mifepristone.7 Though we instruct women to take Misoprostol 24 hours after Mifepristone and strongly encourage women to follow all the instructions for proper use, if a woman takes it slightly earlier or later, this does not effect the outcome of the medical abortion. 102